laughing gas
noun/ˈlɑːfɪŋ ɡæs/
/ˈlæfɪŋ ɡæs/
[uncountable] (informal)- nitrous oxide (= a gas used especially in the past by dentists to prevent you from feeling pain)
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
laughing gas